Odinachi Davidodinachi.hashnode.dev·Apr 12, 2024Dart CookBook: Keywords and their usage.abstract: Used to declare abstract classes. Abstract classes cannot be instantiated directly. //Declaration abstract class SubClass {} //Usage class MainClass extends SubClass{} as: Used for typecasting to a type. dynamic dynamicInt = 0; //...12 likes·90 readsDartAdd a thoughtful commentNo comments yetBe the first to start the conversation.